Across
1
Ball of burning gas in space
3
Tissue that contracts for movement
6
Basic unit of life
8
The Red Planet
Down
2
Fourth state of matter
4
Preserved remains of ancient life
5
Smallest unit of an element
7
Form of thermal energy
Ball of burning gas in space
Tissue that contracts for movement
Basic unit of life
The Red Planet
Fourth state of matter
Preserved remains of ancient life
Smallest unit of an element
Form of thermal energy